AutoItX3 ControlTreeView GetText returns blank

Am using AutoItX3.dll in Windows XP SP3 in Ruby scripts.   Have been trying to capture the text from SysTreeView32 objects in an application without much luck.   I've tried against a Windows Explorer instance and can get the text just fine.

@ai.ControlTreeView('Deal List', '', "[CLASS:SysTreeView32\; INSTANCE:1]", 'GetText', '', '') => ""

Unfortunately I haven't found any others that have the same problem.

I suspect some creative coding on the part of the authors of the application and wonder if there is any other avenue I can explore to get at the text of these tree view items.

The other relevant ControlTreeView commands work (Select, GetSelected, etc.)  Just the GetText fails.

Here, at least, is the AutoItInfo tool output for the naughty window:


Basic Window Info
Title: Deal List By Name
Class: #32770
Basic Control Info
Class: SysTreeView32
Instance: 1


>>>> Window <<<<
Title: Deal List By Name
Class: #32770
Position: 335, 108
Size: 701, 504
Style: 0x96C80000
ExStyle: 0x00100100
Handle: 0x000E08EC

>>>> Control <<<<
Class: SysTreeView32
Instance: 1
ClassnameNN: SysTreeView321
Name:
Advanced (Class): [CLASS:SysTreeView32; INSTANCE:1]
ID: 1181960
Text:
Position: 20, 82
Size: 656, 255
ControlClick Coords: 166, 73
Style: 0x5621D0B5
ExStyle: 0x00100000
Handle: 0x00120908

>>>> Mouse <<<<
Position: 524, 292
Cursor ID: 0
Color: 0xFFFFFF

>>>> StatusBar <<<<

>>>> ToolsBar <<<<

>>>> Visible Text <<<<
A
&OK
Cancel


>>>> Hidden Text <<<<

Finder Tool